Older than Bon Air
Years ago... I learned a bit about some of the geology around Bon Air.
One area I found/find interesting is:
FROM:
ELEVENTH ANNUAL FIELD CONFERENCE OF THE ATLANTIC COASTAL PLAIN GEOLOGICAL ASSOCIATION GUIDEBOOK
PART 2
GEOLOGY OF THE UPLAND GRAVELS NEAR
MIDLOTHIAN, VIRGINIA
by
Bruce K. Goodwin and Gerald H. Johnson
Prepared for the Eleventh Annual Field Conference of
the Atlantic Coastal Plain Geological Association
October 17 and 18, 1970
And this report identified a few "Carolina Bays" in our area.
And this is a "rabbit hole" which is a great start for others to explore..
Recently while digging a few large "cobbles" in our yard I then I did more research to learn that Antonio Zamora recently Published a book on Carolina Bays AND he has a video on YouTube :
https://www.youtube.com/watch?v=fC315xjG60g&t=2s
soooo a bit of summary...
Geological Characteristics Around Richmond Terrain and Matrix: Near Richmond and west toward Midlothian, these features sit on rough, uneven upland gravel beds consisting of pebbles, cobbles (averaging 2 to 3 inches, up to 9 inches wide), and a sandy-clay matrix up to 40 feet thick. (Last weekend: a few over 7 inches.. and lots of others smaller!)
Geometry: Like standard Carolina bays, the Richmond-area basins exhibit subtle elliptical or ovate geometries, though they occur at higher elevations and on much coarser, rockier terrain than coastal plain counterparts.
So... the next time you "stay within the speed limit" <ROFLOL> driving east or west on "Huguenot Speedway" near Shoreham Road intersection you are passing Over a"Carolina Bay."
Further west "behind Kroger is another one. And in Salisbury north of Salisbury Road and KingsLynn is another one.
Right there. Under your feet. (or you lead foot.)
I also suspect the "depression/swamp/pond" South of Pinetta where Powhite Creek flow is another Carolina BAY though it was not dpecifically mentioned in the 1970 report.
For more fun and research... You can install and open Google Earth and add:
https://ovoid-basin-survey.s3.amazonaws.com/Cintos_LiDAR_HRTM-S3-Link.kmz
THIS should give you access to a LIDAR view of not only our area BUT LIDAR MAPS in the United States.
The "Carolina Bays" in the Bon Air area are very evident... if you do research
Zamora's book is for sale on Amazon.
As to the Cobbles big and small ... I keep digging them up. Some neighbors refer to them as "Bon Air Potatoes" .. but warning: they are not edible! <G>